MurtazaSaherwala 3a8d7ec75a Merge pull request #26524 from MurtazaSaherwala:DocumentationUpdation ... Updated trackbar callback function and improved documentation #26524 This Fixes #26467 Description: This pull request improve the OpenCV documentation regarding the Trackbar functionality. The current documentation does not provide clear guidance on certain aspects, such as handling the value pointer deprecation and utilizing callback arguments in C. This update addresses those gaps and provides an updated example for better clarity. Changes: Updated Documentation: Clarified the usage of the value pointer and explained how to pass an initial value, since the value pointer is deprecated. Added more detailed explanations about callback arguments in C, ensuring that users understand how to access and use them in Trackbar callbacks. Added a note on how to properly handle initial value passing without relying on the deprecated value pointer. Updated Tutorial Example: Renamed and used callback function parameters to make them more understandable. Included a demonstration on how to utilize userdata in the callback function. Additional Notes: Removed reliance on the value pointer for updating trackbar values. Users are now encouraged to use other mechanisms as per the current implementation to avoid the runtime warning. ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [x] There is a reference to the original bug report and related work - [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [] The feature is well documented and sample code can be built with the project CMake		2024-12-09 16:23:07 +03:00
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example_cmake	build: suppress the warning	2022-07-12 19:42:39 +09:00
tutorial_code	Merge pull request #26524 from MurtazaSaherwala:DocumentationUpdation	2024-12-09 16:23:07 +03:00
3calibration.cpp	Merge pull request #23108 from crackwitz:issue-23107	2023-01-09 09:55:31 +00:00
application_trace.cpp	Update Samples	2019-09-05 01:10:51 +03:00
aruco_dict_utils.cpp	Merge pull request #23018 from stopmosk:move-aruco-tutorial	2024-02-26 14:57:46 +03:00
asift.cpp	Merge pull request #17907 from Yosshi999:gsoc_asift-py2cpp	2020-08-03 14:11:55 +00:00
audio_spectrogram.cpp	Merge pull request #20934 from SinM9:spectrogram_samples	2021-12-14 17:33:26 +00:00
barcode.cpp	Merge pull request #23666 from mshabunin:barcode-move	2023-06-14 22:21:38 +03:00
bgfg_segm.cpp	samples: use findFile() in "cpp"	2018-11-16 18:08:22 +00:00
calibration.cpp	Merge pull request #23486 from vovka643:4.x_calibration_with_aruco	2023-04-26 12:13:16 +03:00
camshiftdemo.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
cloning_demo.cpp	samples: use findFile() in "cpp"	2018-11-16 18:08:22 +00:00
cloning_gui.cpp	samples: use findFile() in "cpp"	2018-11-16 18:08:22 +00:00
CMakeLists.txt	Revert "suppress warning on GCC 7 and later"	2022-08-07 15:43:10 +03:00
connected_components.cpp	samples: use findFile() in "cpp"	2018-11-16 18:08:22 +00:00
contours2.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
convexhull.cpp	Update convexhull.cpp	2021-09-11 23:58:14 +03:00
cout_mat.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
create_mask.cpp	Update samples	2020-07-23 20:09:37 +03:00
dbt_face_detection.cpp	samples: use findFile() in "cpp"	2018-11-16 18:08:22 +00:00
delaunay2.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
demhist.cpp	Update Samples	2019-09-05 01:10:51 +03:00
detect_blob.cpp	fix 4.x links	2021-12-22 13:24:30 +00:00
detect_mser.cpp	Merge remote-tracking branch 'upstream/3.4' into merge-3.4	2020-03-04 20:49:09 +00:00
dft.cpp	Update Samples	2019-09-05 01:10:51 +03:00
digits_lenet.cpp	add OpenCV sample for digit and text recongnition, and provide multiple OCR models.	2020-08-22 01:02:13 +08:00
digits_svm.cpp	Add namespace specifier for format()	2021-04-21 14:08:52 +08:00
dis_opticalflow.cpp	Update samples	2019-09-20 18:03:26 +03:00
distrans.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
drawing.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
edge.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
ela.cpp	Update samples	2019-09-20 18:03:26 +03:00
em.cpp	Updated ml module interfaces and documentation	2015-02-17 11:46:14 +03:00
epipolar_lines.cpp	Merge pull request #17683 from ivashmak:homography	2020-08-14 22:42:26 +00:00
essential_mat_reconstr.cpp	Update essential_mat_reconstr.cpp	2021-01-18 23:56:34 +08:00
facedetect.cpp	Merge pull request #23108 from crackwitz:issue-23107	2023-01-09 09:55:31 +00:00
facial_features.cpp	fix 4.x links	2021-12-22 13:24:30 +00:00
falsecolor.cpp	Fix trackbar in falsecolor cpp sample	2021-11-06 10:11:58 +00:00
fback.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
ffilldemo.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
fitellipse.cpp	Optimize&Fix fitEllipse sample	2023-03-15 21:30:26 +08:00
flann_search_dataset.cpp	Merge pull request #17643 from pemmanuelviel:pev--new-flann-demo	2020-08-10 13:26:40 +00:00
grabcut.cpp	Updated grabcut example to show the background in a transparant way	2021-07-14 22:02:27 +02:00
image_alignment.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
imagelist_creator.cpp	update cpp samples and tutorials	2016-06-26 20:55:00 +03:00
imagelist_reader.cpp	Merge pull request #13188 from alalek:samples_rename	2018-11-17 00:35:05 +03:00
imgcodecs_jpeg.cpp	build: fix warnings	2022-07-02 00:56:10 +03:00
inpaint.cpp	Update Samples	2019-09-05 01:10:51 +03:00
intelligent_scissors.cpp	Merge pull request #16853 from SimpleVlad:note	2020-03-19 21:39:54 +00:00
intersectExample.cpp	Update samples	2020-07-23 20:09:37 +03:00
kalman.cpp	Merge pull request #20564 from AleksandrPanov:update_kalman_sample	2021-08-20 10:57:05 +00:00
kmeans.cpp	Merge pull request #10258 from savuor:fix/kmeans_channels	2017-12-15 21:48:48 +03:00
laplace.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
letter_recog.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
lkdemo.cpp	Merge pull request #9618 from vipinanand4:goodFeaturesToTrack_added_gradiantSize	2017-09-22 14:04:43 +00:00
logistic_regression.cpp	ml: use OpenCV license header for logistic regression	2021-03-17 20:29:52 +00:00
lsd_lines.cpp	restore LSD	2021-10-01 16:23:16 +03:00
mask_tmpl.cpp	Backport C-API cleanup (imgproc) from 5.x	2023-01-16 23:29:50 +03:00
matchmethod_orb_akaze_brisk.cpp	fix 4.x links	2021-12-22 13:24:30 +00:00
minarea.cpp	samples: use findFile() in "cpp"	2018-11-16 18:08:22 +00:00
morphology2.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
neural_network.cpp	Issue 6780	2016-07-07 09:29:41 +02:00
npr_demo.cpp	samples: use findFile() in "cpp"	2018-11-16 18:08:22 +00:00
opencv_version.cpp	Minor refactoring in several C++ samples:	2018-03-06 14:23:20 +03:00
pca.cpp	Merge pull request #23108 from crackwitz:issue-23107	2023-01-09 09:55:31 +00:00
peopledetect.cpp	Update Samples	2019-09-05 01:10:51 +03:00
phase_corr.cpp	update samples: waitKey() usage	2016-12-15 15:39:47 +03:00
points_classifier.cpp	samples: use findFile() in "cpp"	2018-11-16 18:08:22 +00:00
polar_transforms.cpp	Update Samples	2019-09-05 01:10:51 +03:00
qrcode.cpp	added graphicalCodeDetector, remove QRCodeDetectorBase	2023-06-08 14:50:58 +03:00
segment_objects.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
select3dobj.cpp	Merge pull request #22149 from seanm:sprintf	2022-06-25 06:48:22 +03:00
simd_basic.cpp	Clean up the Universal Intrinsic API.	2023-10-13 19:23:30 +08:00
smiledetect.cpp	Update Samples	2019-09-05 01:10:51 +03:00
squares.cpp	Fix squares sample failure when a single file passed	2021-04-28 09:36:04 +03:00
stereo_calib.cpp	added aruco pattern into stereo_calibration.cpp	2023-05-16 12:22:03 +03:00
stereo_match.cpp	Update the stereo sample:	2020-08-20 12:20:25 +02:00
stitching_detailed.cpp	Merge remote-tracking branch 'upstream/3.4' into merge-3.4	2020-04-24 19:02:39 +00:00
stitching.cpp	Changed sample code, fixes #18807	2020-11-14 23:29:51 +02:00
text_skewness_correction.cpp	Added tutorial for text skewness correction in C++ and Python.	2020-01-23 08:24:39 +03:00
train_HOG.cpp	Merge pull request #23109 from seanm:misc-warnings	2023-10-06 13:33:21 +03:00
train_svmsgd.cpp	Fix some clang 14 warnings	2023-02-07 01:19:00 +03:00
travelsalesman.cpp	Fixed compilation warnings in samples:	2018-02-12 18:42:36 +03:00
tree_engine.cpp	using argv[0] represent binary executable files' name in help() function	2020-02-28 20:36:56 +08:00
videocapture_audio_combination.cpp	Merge pull request #19721 from MaximMilashchenko:Audio	2021-10-20 16:18:24 +03:00
videocapture_audio.cpp	Merge pull request #19721 from MaximMilashchenko:Audio	2021-10-20 16:18:24 +03:00
videocapture_basic.cpp	Update videocapture_basic.cpp	2020-04-24 11:42:45 +03:00
videocapture_camera.cpp	samples: videocapture_camera use VideoCapture with 0 index	2018-07-03 15:44:53 +03:00
videocapture_gphoto2_autofocus.cpp	FIx misc. source and comment typos	2019-08-15 13:09:52 +03:00
videocapture_gstreamer_pipeline.cpp	videoio(doc): add 'videoio_hwaccel' group, fix typos	2021-03-07 04:47:22 +00:00
videocapture_image_sequence.cpp	Merge pull request #13188 from alalek:samples_rename	2018-11-17 00:35:05 +03:00
videocapture_microphone.cpp	Merge pull request #19721 from MaximMilashchenko:Audio	2021-10-20 16:18:24 +03:00
videocapture_obsensor.cpp	Merge pull request #24877 from zzuliys:feature/mac	2024-03-29 11:23:41 +03:00
videocapture_openni.cpp	Add tutorial on how to use Orbbec Astra 3D cameras	2020-11-19 13:31:22 +03:00
videocapture_realsense.cpp	New example for realsense	2021-12-16 15:07:53 -03:00
videocapture_starter.cpp	Merge pull request #22149 from seanm:sprintf	2022-06-25 06:48:22 +03:00
videowriter_basic.cpp	samples: avoid using of legacy C-like API	2018-03-26 13:42:35 +03:00
warpPerspective_demo.cpp	Fix some clang 14 warnings	2023-02-07 01:19:00 +03:00
watershed.cpp	Merge pull request #23108 from crackwitz:issue-23107	2023-01-09 09:55:31 +00:00